Technetium-99m is a radioactive isotope widely used in medical imaging as a radiopharmaceutical. It plays a crucial role in diagnostic nuclear medicine due to its ideal properties, such as a short half-life of about 6 hours, allowing for quick imaging with minimal radiation exposure to patients. Its availability and versatility make it the most commonly used isotope in various diagnostic procedures, including single-photon emission computed tomography (SPECT).
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